Trolley.



BEST AVA\LABLE cop PATENTBD MAY 10, 1904.

E. E. GILLINGHAM & 1). E. HUNTLEY.

. TROLLEY.

APPLICATION FILED APR. 27. 1903.

no MODEL.

.DEEUZZZ Hdiigzssz I Nana's PETERS c0. mmom'no, wasmucwu n c BEST AVAILABLE COP UNITED STATES- Patented May 10, 1904.

PATENT 'QIFFICE.

TROL'LEY. I

SPECIFICATION forming part of Letters Patent No. 759,433, dated May 10, 1904.

Application filed April 27, 1903. Serial No. 154,495. (No model.) i

To all whom, it ntay concern.

Be it known that we, ELMER E. GILLINGHAM and DELANCEY E. HUNTLEY, citizens of the United States, residing at Wellston, in the county of Jackson and State of Ohio, have invented a new and useful Trolley, of which the following is a specification.

This invention relates to electric collectors, but is particularly designed for use with overhead systems, the object being to provide a collector which will permit the trolley-wheels to remain in contact with the conductor at all times, as well as to equalize the'tension of the contacting members so as to practically eliminate the electric are so prevalent when the ordinary single trolley is employed.

Further objects, as well as the novel details of construction embodied in the preferred form of our invention, will be clearly set forth in the following description, reference being had to the accompanying drawings, in which Figure 1 is a view in side elevation of a collector constructed in accordance with our invention, and Fig. 2 is a top plan view of the same. Fig. 3 is a view, partly in plan and partly in section, of one of the trolley-wheels; and Fig. 1 is a vertical longitudinal sectional view of the same.

The trolley-head comprises two frame-sections 1 and 2, at the opposing edges of which are interlocking tongues 3 and 4:, having alining openings 5 for the reception of apintle 6,

which fits into the openings to hinge the frames 1 and 2 together. These frames carry alining trolley-wheels 7 and 8, one of which is at all times kept in contact with the conductor-wire on account of the rear wheel being mounted at a greater distance from the support for the frame than is the front wheel, as will appear as the invention is better understood. The trolley-wheels are kept in alinement with each other by the spring-fingers 9 and 10, arranged in pairs and carried by one of the sections to bear upon the respective sides of the other section. The front section is pivotally mounted between the arms 11 and 12 of the trolleyharp 13 at an eccentric to the pivotal point of the wheel 7.and in advance of the hinged end of the section 1. This arrangement results in the other frame, which is hinged to it.

the rear end of the frame being heavier than lwith the wire, thus causing the front wheel to remainin contact with. the wire at all times.

- Both wheels are normally held in contact with the wire by the spring 14, which bears at one end against one of the arms of the harp and at the other end against a lug or projection 14: on the frame carried by the harp. The strength of the spring 14 will be such that the wheels will be normally held in horizontal alinement; but whenundue pressure is exerted upon either of the trolley-wheels one of the frames will swing Vertically, carrying withAit S soon as the stress is relieved the spring will return the frame to its correct or horizontal position.

It will be observed that the front wheel carried by the harp is incapable of any lateral or sidewise movement except with the harp;

but the trailed wheel carried by the springpressed hinged section can move both in a horizontal and a vertical plane independent of any movement of the harp. This is made possible by pivoting the entire frame to the harp for vertical movement, While the rear section of the head is hinged independently of the harp, but to the front section, so that it will normally follow in the path thereof as the conductor moves along the conductor-wire 15, except when rounding a curve, in which instance the rear or trailing wheel will be swerved to one side of the forward wheel until the curve is passed, when the spring-fingers 9 and 10 will throw the sections into alinement. Any jar upon the harp which would cause the head to swing in a vertical plane will permit the rear wheel to drop slightly, but maintain the front wheel in constant contact with the wire.

In order to provide for an easy rotation of the trolley-wheels, the spokes 17 of said wheels are hollow and receive suitable lubricating material, which can be deposited by gravity through the openings 18 in the bushing 19, forming the hub and fitting around the axles 20, which receives the lubricant, so as to prevent the tendency of the wheel-hubs to become hot to the detriment of the trolley.

The even pressure exerted upon the colleetor will hold both Wheels in continuous contact with the wire, so as to practically prevent the formation of the are generally resulting from the employment of the single trolleys.

What we claim is A trolley head comprising two alining frames with interlocking tongues having coinciding openings, a pintle fitting in said openings, alining trolley-wheels carried by the respective frames, spring-fingers carried by one of the frames and bearing upon the other, and a trolley-harp having parallel arms between which the one frame is pivoted, lugs on the pivoted frame, and a spring terminally engaging the pivot of the frame and the lug.

In testimony that we claim the foregoing as our own We have hereto afli Xed our signatures in the presence of two witnesses.

ELMER E. GILLINGHAh l. DELANCEY E. HUNTLEY.

Witnesses:

E. H. VViLLIs,

E. SHAEFFER. 

